1, key failure, most mobile phone keyboard is dirty or is oxidized, clean it.
2, it may be the keyboard and the motherboard interface there is a virtual weld phenomenon.
3, keyboard failure caused by processor chip damage.
4. If the printed circuit on the motherboard is broken, the keyboard signal cannot be transmitted to the processor chip.
5, if only some of the keys fail, the keyboard is generally dirty, if it is all the keyboard failure, it is the interface or processor chip and problems.
6, the phone is in standby when everything is normal, but as long as the answer or call the phone automatically shut down
- 3G Mobile Phone Selection
- WCDMA Basic Introduction
- Mobile Phones Are Practical And Easy To Use In ...
- 3G Mobile Application
- What Is A 3G Smart Phone?
- WCDMA Technical Features
- 3G Mobile Phone Use Advantage
- 3G Mobile Phone Wireless Interface
- The Ministry Of Industry And Information Techno...
- 3G Mobile Phone Development Trend
- Global Sources Fair
- All You Need To Know About 2G Network Shutdown